Geophysik I / Geophysics I, Softcover reprint of the original 1st ed. 1956 Coll. Geophysik / Geophysics

The Rotation of the Earth.- I. The Unit of Time.- II. The Secular Acceleration of the Motions of the Sun and Moon.- III. Fluctuations of the Motion of the Moon.- IV. Seasonal Changes in the Length of the Day.- V. The Causes of the Irregular and Seasonal Variations in the Rotation.- Séismométrie.- A. Théorie linéarisée des Séismographes pendulaires.- B. Effets non linéaires.- C. Réalisation des Séismographes pendulaires.- D. Séismographes électromagnétiques.- E. Enregistreurs de Déformation séismique (Strain Seismographs).- F. Séismographes électroniques.- G. Dispositifs accessoires.- Bibliographie Générale.- Seismic Wave Transmission.- A. Deformation theory.- B. The initial conditions.- C. P and S waves and rays.- D. Seismic travel-times.- E. P and S velocity distributions.- F. Amplitude theory.- G. Applications of seismic data to the determination of properties of the Earth’s deep interior.- General References.- Surface Waves and Guided Waves.- 1. Introduction.- 2. Love waves in the crust.- 3. Rayleigh waves in the crust.- 4. Lg waves.- 5. Waveguides in the upper mantle.- 6. T phase and Sofar waves in the Ocean.- 7. Explosion-generated surface waves.- L’agitation microséismique.- 1. Les différentes formes de microséismes.- 2. Théorie de l’agitation générale.- 3. Applications.- Bibliographie générale.- Seismic Prospecting.- 1. Introduction.- 2. Reflection Shooting.- 3. Seismic Refraction Measurements.- 4. Engineering and Mining Applications.- Messung elastischer Eigenschaften von Gesteinen.- A. Statische Methoden.- B. Dynamische Methoden.- C. Messung der Wellenausbreitung in Gesteinsproben.- Literatur.- Gravity and Isostasy.- I. Introduction.- II. The Absolute Measurements of Gravity.- III. Relative Gravity Measurements.- IV. Reduction ofGravity Observations.- V. The Mathematical Interpretation of Gravity Anomalies.- VI. The Meaning of Gravity Anomalies.- Structure of the Earth’s Crust.- 1. Introduction.- 2. Continents.- 3. Oceanic Crust.- 4. Continental Margins and Anomalous Areas.- 5. Composition of the Crust.- Forces in the Earth’s Crust.- 1. The Earth’s pertinent surface features.- 2. Principles of a physical explanation.- 3. Dynamics of faulting.- 4. Dynamics of folding.- 5. Physics of orogenesis.- 6. The distributions of continents and oceans.- 7. Conclusion.- Radioactivity and Age of Minerals.- A. Introduction.- B. Historical review.- C. Physical considerations.- D. Radioactivity of rocks.- a) Uranium and thorium S. 310. — b) Potassium and rubidium S. 312.- E. Methods of age determinations.- F. Geological considerations.- The Earth’s Interior.- A. Mechanical Properties.- B. Thermal Properties.- C. Geomagnetism and the Earth’s Interior.- Electricité tellurique.- A. Introduction.- B. Bases théoriques de la distribution des courants électriques dans le sol.- C. La prospection électrique.- D. Dispositifs expérimentaux pour l’étude des courants telluriques. Perturbations diverses.- E. Résultats généraux d’expérience.- F. Relations entre variations magnétiques et telluriques.- G. Conclusion.- Bibliographie.- Magnetization of Rocks.- A. Mineralogical aspects.- B. Physical processes in the magnetization of rocks.- C. Determination of the original magnetization of rocks.- D. Survey of observational data of remanent magnetization.- E. Geophysical interpretation of results.- F. The magnetic susceptibility of rocks.- References.- The Magnetism of the Earth’s Body.- A. Main field and secular variation: Observations and analysis.- B. The electrical conductivity within the earth.-C. Theories.- References.- Figur der Erde.- A. Grundbegriffe.- B. Theorie der Geoidbestimmung.- C. Bewegung der Erdachse.- D. Neuzeitliche Probleme und Entwicklungen.- Literatur.- Sachverzeichnis (Deutsch-Englisch).- Subject Index (English-German).- Table des Matières (Français).